/* ============================================================
   经纬易行 · 全球出行服务网站 统一视觉系统
   主色：深海军蓝 / 墨黑 / 象牙白 / 浅灰　强调：香槟金
   移动优先：默认 375px，桌面在 min-width 断点扩展
   ============================================================ */

:root{
  --navy:#0E2A3F;
  --navy-deep:#081C2C;
  --ink:#0B0E14;
  --ivory:#F7F4EC;
  --mist:#EDF0F3;
  --gold:#C9A96A;
  --gold-soft:#E5D5AC;
  --slate:#5B6B78;
  --slate-soft:#93A1AE;
  --line:#DCE3EA;
  --line-dark:rgba(244,239,230,.16);
  --shadow:0 10px 30px rgba(8,28,44,.10);
  --radius:14px;
  --serif:'Noto Serif SC','Songti SC',Georgia,'Times New Roman',serif;
  --sans:'Noto Sans SC','Microsoft YaHei',system-ui,-apple-system,sans-serif;
}

*{margin:0;padding:0;box-sizing:border-box;}
[hidden]{display:none !important;}
html{scroll-behavior:smooth;}
body{
  font-family:var(--sans);
  font-size:15px;
  line-height:1.8;
  color:var(--ink);
  background:var(--ivory);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-family:var(--serif);font-weight:700;line-height:1.32;color:var(--navy-deep);}
p{color:var(--slate);}
a{color:var(--navy);}
img{max-width:100%;display:block;}

.wrap{max-width:1120px;margin:0 auto;padding:0 20px;}
.section{padding:64px 0;}
.section--soft{background:var(--mist);}
.section--paper{background:var(--ivory);}
.section--dark{background:var(--navy-deep);color:var(--ivory);}
.section--navy{background:var(--navy);color:var(--ivory);}
.section--dark p,.section--navy p{color:#C7D2DC;}

/* ---------- 顶部导航 ---------- */
.topbar{
  position:sticky;top:0;z-index:60;
  background:rgba(8,28,44,.97);
  color:var(--ivory);
  border-bottom:1px solid var(--line-dark);
}
.topbar .wrap{
  display:flex;align-items:center;justify-content:space-between;
  height:60px;
}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:15px;letter-spacing:.4px;color:var(--ivory);text-decoration:none;}
.brand svg{flex:none;}
.brand small{display:block;font-size:10px;font-weight:400;letter-spacing:1.4px;color:var(--gold-soft);line-height:1.2;}
.nav{display:flex;gap:4px;}
.nav a{
  color:#D7E0E8;text-decoration:none;font-size:13.5px;
  padding:8px 11px;border-radius:8px;transition:background .15s,color .15s;
  white-space:nowrap;
}
.nav a:hover{background:rgba(201,169,106,.14);color:var(--gold-soft);}
.nav a.on{background:rgba(201,169,106,.22);color:var(--gold-soft);font-weight:700;}
.langsw{display:flex;border:1px solid rgba(201,169,106,.5);border-radius:999px;overflow:hidden;}
.langsw button{
  border:0;background:transparent;color:var(--ivory);font-size:12px;
  padding:5px 12px;cursor:pointer;font-family:var(--sans);line-height:1.4;
}
.langsw button.on{background:var(--gold);color:var(--navy-deep);font-weight:700;}
.nav-toggle{
  display:none;border:0;background:transparent;color:var(--ivory);
  width:44px;height:44px;align-items:center;justify-content:center;cursor:pointer;
}

/* ---------- Hero ---------- */
.hero{
  position:relative;color:var(--ivory);overflow:hidden;
  background:var(--navy-deep);
  padding:88px 0 72px;
}
.hero--full{min-height:88vh;display:flex;align-items:center;}
.hero .bg{
  position:absolute;inset:-5%;
  background:center/cover no-repeat;
  animation:kenburns 14s ease-in-out infinite alternate;
}
@keyframes kenburns{
  0%{transform:scale(1.06) translate(0,0);}
  100%{transform:scale(1.22) translate(-2%,-2.5%);}
}
@media (prefers-reduced-motion:reduce){
  .hero .bg{animation:none;}
}
.hero .veil{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(8,28,44,.70) 0%,rgba(8,28,44,.32) 50%,rgba(8,28,44,.88) 100%);
}
.hero .inner{position:relative;max-width:820px;}
.hero .kicker{
  display:inline-block;font-size:12px;letter-spacing:3px;color:var(--gold-soft);
  border:1px solid rgba(201,169,106,.55);padding:5px 16px;border-radius:999px;
  margin-bottom:22px;background:rgba(8,28,44,.35);
}
.hero h1{font-size:clamp(30px,6vw,56px);color:var(--ivory);letter-spacing:1px;}
.hero .sub{
  margin-top:16px;font-size:clamp(14px,2.2vw,19px);color:var(--gold-soft);
  letter-spacing:5px;font-weight:500;
}
.hero p.lead{
  margin-top:22px;font-size:15px;color:#D7E0E8;max-width:660px;line-height:2;font-weight:300;
}
.hero .cta{margin-top:34px;display:flex;gap:12px;flex-wrap:wrap;}
.hero--sm{padding:64px 0 52px;}
.hero--sm h1{font-size:clamp(26px,4.6vw,40px);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:999px;font-size:14.5px;font-weight:700;
  text-decoration:none;font-family:var(--sans);cursor:pointer;border:0;
  transition:transform .15s ease,box-shadow .15s ease,background .15s ease;
  min-height:46px;
}
.btn:active{transform:translateY(0);}
.btn--gold{background:var(--gold);color:var(--navy-deep);box-shadow:0 8px 22px rgba(201,169,106,.30);}
.btn--gold:hover{transform:translateY(-2px);}
.btn--ghost{background:transparent;color:var(--ivory);border:1px solid rgba(244,239,230,.55);}
.btn--ghost:hover{background:rgba(244,239,230,.10);}
.btn--navy{background:var(--navy);color:var(--ivory);}
.btn--navy:hover{background:var(--navy-deep);transform:translateY(-2px);}
.btn--line{background:transparent;color:var(--navy);border:1px solid rgba(14,42,63,.5);}
.btn--line:hover{background:rgba(14,42,63,.06);}
.cta-row{margin-top:34px;display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- 区块头 ---------- */
.sec-head{max-width:760px;margin-bottom:44px;}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.kicker{font-size:12px;letter-spacing:3.5px;color:var(--gold);font-weight:700;}
.sec-head h2{font-size:clamp(24px,4vw,36px);margin-top:12px;}
.sec-head p{margin-top:14px;font-size:15px;color:var(--slate);}
.section--dark .sec-head h2{color:var(--ivory);}
.section--dark .sec-head p{color:#B9C6D2;}

/* ---------- 网格与卡片 ---------- */
.grid{display:grid;gap:16px;}
.grid--2{grid-template-columns:1fr;}
.grid--3{grid-template-columns:1fr;}
.grid--4{grid-template-columns:1fr 1fr;}

.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px;position:relative;
  transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#C9D6E0;}
.card .ic{
  width:46px;height:46px;border-radius:12px;border:1px solid rgba(201,169,106,.55);
  background:rgba(201,169,106,.10);color:var(--gold);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.card h3{font-size:17px;}
.card p{margin-top:8px;font-size:13.5px;color:var(--slate);}
.card .link{margin-top:14px;display:inline-flex;align-items:center;gap:5px;font-size:13.5px;font-weight:700;color:var(--navy);text-decoration:none;}
.card .link:hover{color:var(--gold);}
.card--dark{background:rgba(255,255,255,.04);border-color:var(--line-dark);}
.card--dark h3{color:var(--ivory);}
.card--dark p{color:#B9C6D2;}

/* 编号序列（用于方案示例/服务分区，属真序列） */
.seq{display:flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:50%;background:var(--navy);color:var(--gold-soft);font-family:var(--serif);font-weight:700;font-size:15px;margin-bottom:14px;}

/* ---------- 左右图文 ---------- */
.split{display:grid;grid-template-columns:1fr;gap:36px;align-items:center;}
.split .photo{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);}
.split .photo img{width:100%;height:100%;object-fit:cover;}
.split .txt h2{font-size:clamp(22px,3.4vw,32px);}
.split .txt p{margin-top:16px;font-size:14.5px;color:var(--slate);}
.facts{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px;}
.fact{
  border:1px solid rgba(201,169,106,.6);border-radius:999px;padding:7px 16px;
  font-size:12.5px;color:var(--navy);background:rgba(201,169,106,.08);
}
.section--dark .fact{color:var(--gold-soft);border-color:rgba(201,169,106,.5);background:rgba(201,169,106,.10);}

/* ---------- 全宽横幅 ---------- */
.band{
  position:relative;color:var(--ivory);overflow:hidden;
  background:var(--navy-deep);padding:72px 0;
}
.band .bg{position:absolute;inset:0;background:center/cover no-repeat;}
.band .veil{position:absolute;inset:0;background:rgba(8,28,44,.72);}
.band .inner{position:relative;max-width:760px;margin:0 auto;text-align:center;}
.band .kicker{color:var(--gold-soft);}
.band h2{font-size:clamp(23px,3.8vw,34px);color:var(--ivory);margin-top:12px;}
.band p{margin-top:16px;color:#D7E0E8;font-size:14.5px;}
.band .cta-row{justify-content:center;}

/* ---------- 步骤（合作流程） ---------- */
.steps{counter-reset:step;display:grid;gap:14px;}
.step{
  display:grid;grid-template-columns:44px 1fr;gap:16px;
  background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px;
}
.step .no{
  width:44px;height:44px;border-radius:50%;background:var(--navy);color:var(--gold-soft);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--serif);font-weight:700;font-size:17px;
}
.step h3{font-size:16px;}
.step p{margin-top:4px;font-size:13.5px;color:var(--slate);}

/* ---------- 比较表（方案示例） ---------- */
.table-wrap{overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:var(--radius);}
.table{width:100%;border-collapse:collapse;table-layout:fixed;min-width:640px;}
.table th,.table td{padding:13px 16px;text-align:left;font-size:13.5px;border-bottom:1px solid var(--line);vertical-align:top;}
.table th{background:var(--navy);color:var(--ivory);font-family:var(--serif);font-size:14px;font-weight:700;}
.table tr:last-child td{border-bottom:0;}
.table td:first-child{font-weight:700;color:var(--navy-deep);}

/* ---------- 目的地分区 ---------- */
.region{
  display:grid;grid-template-columns:1fr;gap:24px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px;
}
.region .rhead{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap;}
.region .rhead h3{font-size:20px;}
.region .rhead span{font-size:12.5px;color:var(--gold);letter-spacing:2px;font-weight:700;}
.region ul{list-style:none;display:grid;gap:8px;}
.region li{
  padding-left:22px;position:relative;font-size:14px;color:var(--slate);
}
.region li::before{
  content:"";position:absolute;left:2px;top:11px;width:8px;height:8px;
  border-radius:50%;background:var(--gold);
}
.region .link{margin-top:16px;font-size:14px;font-weight:700;color:var(--navy);text-decoration:none;display:inline-flex;gap:6px;align-items:center;}
.region .link:hover{color:var(--gold);}

/* ---------- 表单 ---------- */
.form{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 24px;max-width:720px;
}
.form .row{display:grid;gap:14px;}
.form .field{display:grid;gap:6px;}
.form label{font-size:13.5px;font-weight:700;color:var(--navy-deep);}
.form label .en{display:block;font-weight:400;font-size:11.5px;color:var(--slate-soft);letter-spacing:.5px;}
.form input,.form select,.form textarea{
  width:100%;font-family:var(--sans);font-size:16px;line-height:1.5;
  padding:12px 14px;border:1px solid var(--line);border-radius:10px;color:var(--ink);
  background:var(--ivory);
}
.form input:focus,.form select:focus,.form textarea:focus{outline:2px solid rgba(201,169,106,.6);border-color:var(--gold);}
.form textarea{min-height:110px;resize:vertical;}
.form .hint{font-size:12px;color:var(--slate-soft);}
.form .note{
  margin-top:14px;font-size:12.5px;color:var(--slate);line-height:1.8;
  background:var(--mist);border:1px dashed var(--line);border-radius:10px;padding:12px 14px;
}
.form .msg{
  display:none;margin-top:14px;font-size:13.5px;line-height:1.8;
  background:rgba(14,42,63,.06);border:1px solid rgba(14,42,63,.25);
  border-radius:10px;padding:14px 16px;color:var(--navy-deep);
}
.form .msg.show{display:block;}
.form .msg b{color:var(--navy);}
.form button[type="submit"]{margin-top:20px;}

/* ---------- 联系卡片 ---------- */
.ways{display:grid;gap:14px;}
.way{
  display:flex;gap:14px;align-items:flex-start;
  background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px;
  text-decoration:none;transition:border-color .15s,box-shadow .15s;
}
.way:hover{border-color:rgba(201,169,106,.7);box-shadow:var(--shadow);}
.way .ic{
  flex:none;width:42px;height:42px;border-radius:11px;border:1px solid rgba(201,169,106,.55);
  background:rgba(201,169,106,.10);color:var(--gold);
  display:flex;align-items:center;justify-content:center;
}
.way .lb{font-size:11.5px;letter-spacing:1.6px;color:var(--gold);font-weight:700;}
.way .val{font-size:15px;color:var(--navy-deep);font-weight:700;word-break:break-all;}
.way .ds{font-size:12.5px;color:var(--slate);margin-top:2px;}

/* ---------- 页脚 ---------- */
.footer{background:var(--ink);color:#8FA0AE;padding:40px 0 32px;font-size:12.5px;line-height:2;}
.footer .wrap{display:grid;gap:26px;}
.footer h4{color:var(--gold-soft);font-size:14px;margin-bottom:8px;font-family:var(--serif);}
.footer a{color:#B9C6D2;text-decoration:none;}
.footer a:hover{color:var(--gold-soft);}
.footer .cols{display:grid;grid-template-columns:1fr;gap:22px;}
.footer .bottom{border-top:1px solid rgba(244,239,230,.12);padding-top:18px;font-size:12px;color:#72818F;}
.footer .bottom b{color:var(--gold-soft);font-weight:600;}

/* ---------- 警示条 ---------- */
.noticebar{
  background:rgba(201,169,106,.12);border:1px dashed rgba(201,169,106,.6);
  color:var(--gold-soft);font-size:12.5px;border-radius:10px;padding:12px 16px;line-height:1.8;
}

/* ---------- 桌面断点 ---------- */
@media (min-width:768px){
  .section{padding:88px 0;}
  .grid--2{grid-template-columns:repeat(2,1fr);}
  .grid--3{grid-template-columns:repeat(3,1fr);}
  .grid--4{grid-template-columns:repeat(4,1fr);}
  .split{grid-template-columns:1fr 1fr;gap:56px;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .ways{grid-template-columns:repeat(3,1fr);}
  .region{grid-template-columns:220px 1fr;align-items:start;}
  .form .row--2{grid-template-columns:1fr 1fr;}
  .footer .cols{grid-template-columns:repeat(3,1fr);}
}
@media (min-width:1024px){
  .steps{grid-template-columns:repeat(2,1fr);}
}

/* ---------- 移动导航 ---------- */
@media (max-width:767px){
  .nav-toggle{display:flex;}
  .nav{
    display:none;position:absolute;top:60px;left:0;right:0;
    background:rgba(8,28,44,.98);flex-direction:column;padding:12px 20px 20px;
    border-bottom:1px solid var(--line-dark);
  }
  .nav.open{display:flex;}
  .nav a{padding:12px 6px;font-size:15px;border-bottom:1px solid rgba(244,239,230,.08);}
  .topbar{position:relative;}
  .hero--full{min-height:auto;}
}